Avatar for Loza
May 16, 2020 10:26 PM CST
Australia Victoria
How do I treat spider mite on my staghorn fern
Image
May 17, 2020 9:12 AM CST
Name: Will Creed
NYC
Prof. plant consultant & educator
Scale insects are common on Staghorn, but spider mites are not. Please post a photo that shows the entire plant and another that shows the suspected mites.
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
Contact me directly at wcreed@HorticulturalHelp.com
I now have a book available on indoor plant care
Avatar for Loza
May 17, 2020 9:33 PM CST
Australia Victoria
The pictures of the dead staghorn and 1 elkhorn. These 2 ferns were first to die firstly they had scale black spots so I treated that with white oil. Both the ferns died. . I don't think the scale completely killed the ferns but something did.
1 pick has tiny little holes in the cover also has a bit of scale. Reluctant to use white oil again as I don't think it helped my two dead ferns.
.
Thumb of 2020-05-18/Loza/56b370


Thumb of 2020-05-18/Loza/451e0b
2 pick mostly scale
What does spider mite look like? These ferns seem to be very hardy but unfortunately I still seem to be able to kill them.
Image
May 18, 2020 8:14 AM CST
Name: Will Creed
NYC
Prof. plant consultant & educator
I cannot see either scale or spider mites in the pg=hotos you posted. The brown frond patches are more likely caused by the roots getting too dry, sun scorch, or mishandling, but not scale.

Oil sprays are not recommended for Ferns of any kind.
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
Contact me directly at wcreed@HorticulturalHelp.com
I now have a book available on indoor plant care
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